Valve



FIG. 1 is a front view of the valve;

FIG. 2 is a rear view of the valve;

FIG. 3 is a right side view of the valve;

FIG. 4 is a left side view of the valve;

FIG. 5 is a top view of the valve; and,

FIG. 6 is a bottom view of the valve. 

CLAIM The ornamental design for a valve, as shown. 